TCM, kidney, ears on the strictest contains all the organs of the body and contact each organ, equivalent to a microcosm of the human body, so often rub ears, is a good health preservation methods.

The registration organ of representative offices shall strengthen its contact with the original registration organ of the enterprises in bonded zones, and do well in its daily supervision work;

Aim: to observe the organ morphologic changes of rabbits' electric shock damnification by electro-railway contact net, and to provide basis for the authentication.